netdev - Re: netlink stats: Ability to get stats for a single device?

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Message-ID: <1288122986.2652.20.camel@edumazet-laptop>
Date:	Tue, 26 Oct 2010 21:56:26 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	greearb@...delatech.com, netdev@...r.kernel.org
Subject: Re: netlink stats: Ability to get stats for a single device?

Le mardi 26 octobre 2010 à 12:38 -0700, David Miller a écrit :
> From: Ben Greear <greearb@...delatech.com>
> Date: Tue, 26 Oct 2010 12:31:12 -0700
> 
> > Am I missing something, or do I just need to write up a patch
> > to have netlink pay attention to the ifindex?
> 
> Setting the ->ifi_index or IFLA_IFNAME attribute values appropriately
> in the getlink request doesn't work?
> 
> That should give you back, amonst other things, the rtnl_link_stats
> for the device in the netlink response.
> --

Yep, it should be easy to change iproute2 to not ask a full dump
in ip/ipaddress.c :

if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) ...

and instead use rtnl_send() or something like that, if user provided one
specific interface name   (or index)

ip link show dev eth0




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